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    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
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  • Added play-pause control for the Gallery.

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  • FFmpeg image2 output : Control JPG image quality when using mjpeg_qsv

    11 avril 2022, par clic

    My FFmpeg command ouputs a series of JPG images. Simplified :

    


    


    ffmpeg -f dshow -video_size 3840x2160 -framerate 25 -i "video=My
Webcam" -qscale:v 5 -vcodec mjpeg_qsv "C :\out\%d.jpg"

    


    


    I want to use -vcodec mjpeg_qsv to leverage GPU acceleration. Usually (without "_qsv") I can control JPG image quality by using qscale:v , but it seems to have no effect in combination with mjpeg_qsv.

    


    Is it even possible to control JPG image quality when using mjpeg_qsv ? If yes, any ideas how ? Thanks !

    


  • FFMPEG mixing .wav files volume control [closed]

    1er avril 2024, par JoonSeo Yang

    I am working on Java, using the ffmpeg library with command line processing to mix 2 .wav files into one .wav file, but I would like to know how to control the volume of each original file.

    


    My problem : i have 2 audio files (human voice BGM), but BGM is too loud, so i can barely hear human voice, i would like to -> volume down the BGM file, or volume up voice file

    


    Here is my partial code

    


    String ffmpegCommand = file_exe.getAbsolutePath()
    + String.format(
        " -i %s -i %s -filter_complex amix=inputs=2:duration=first:dropout_transition=3 %s",
        file_1.getAbsolutePath(), file_2.getAbsolutePath(), outputFilePath);
Process process = Runtime.getRuntime().exec(ffmpegCommand);


    


    it is quite simple code. I need help on this, and it would be very thankful to which document to read to get such information

    


    PS.sorry for my poor eng.. Im not native :D

    


    I was wandering around documentations, but its quite hard to find what i want

    


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